AIRBAG LIGHT ISSUE. wiring/pin-out diagram?

[thomasshawn]

my POSIP module was "repaired" by Porsche service under the previous owner.
this is what they felt was appropriate? basically they heat shrinked the plugs leads in contact with each other.

currently my "passenger airbag off" light is staying on unless someone is sitting in the seat.
I'm assuming it's not the whoe module but just the janky connection they attempted to make. Considering ordering a new harness which I THINK is part 997.612.688.01
but before I do that I want to see if making the better connection does in fact fix it. so I need the pin-out connections to verify correct pins.

so if anyone has the pin-outs/wiring for this module
997.618.537.07
i'd appreciate it.

 

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if nobody is sitting in the seat the light should be off.
if someone weighing more than 60lbs in seat- light off
someone or something in seat <60lbs light ON

confirmed with dealership this morning

mine is ON unless someone >60lbs in seat then it's off

 

Edited October 24, 2018 by thomasshawn
update

[thomasshawn]

checking with durametric there are no codes for the airbag. several different PCM codes but I have an aftermarket radio in place so I expect those to be there.

the light does go off when someone sits there

at baseline with car running the weight class is 1. and the light is on.

when i jump into the passenger seat it looks like the pic i included. weight class 3.  and the light is now off. so it is working but the baseline s incorrect

[thomasshawn]

If anybody could just post the picture of their plug then I could trace the wiring and make sure the plug is wired correctly that would be a good first start as well thank you

[Loren]

Exact model and year of the car, please?

Do you have an airbag fault code(s)?

[thomasshawn]

2007 Carrera turbo. 

cleared fault codes a few days ago. nothing has returned except C102 can single wire operation "comfort." it won't clear with durametric which to me means maybe it's a real fault. 

initially I had a passenger thorax code above level don't recall the exact code. but it cleared fine and hasn't returned. I'm pretty sure that was the code that PO said was coming up before and they had to take it in for repair. 

I have a few PCM fault  codes spread around but I have pulled the PCM and replaced it with an aftermarket headunit so those are expected. 

Sent from my SM-G965U using Tapatalk

[Richard Hamilton]

I sent you a PM with a wiring diagram.

 

An "above level" fault code might indicate that the resistance of an airbag unit is high, so check the connections.  A bad contact will give you a higher resistance.  The control unit uses the resistance of each airbag or belt tensioner unit to check the system.  On a PIWIS you can read the resistance in Actual Values, so maybe check that out on Durametric.  They should be around 2.5 ohms.

[thomasshawn]

more of the story just for completeness. I just had a full paint correction done on the vehicle, and ceramic coating. I know the bumpers and hood were heavily buffed and polished. the guy I used does a lot of high-end cars including Porsche. He was aware of the issue with the bumper sensors for the airbags. I'm not 100%, but fairly certain, that after I got the vehicle back it was working correctly. Also it's not throwing the normal codes that people complain of when they've had a front sensor go out.

So after the polishing but Immediately preceding this episode with the light I swapped the center console. It was a full console replacement. I had sent mine off to Classic 9 for a full leather wrap and I had just installed it including swapping out all the wiring under the console. Other than one cigarette lighter none of the connections were undone other than the main connection for the console harness and it is reconnected, so I don't see any loose connections being an issue and I checked them pretty well. before buttoning everything up.

When I completed the console swap the last thing I did was to change out the passenger airbag light. I simply lifted the light assembly out unplugged it and plugged the new one in. Not sure if any of this matters but, the key was on and I was sitting in the passenger seat on one knee as I basically just leaned in pulled out the plug and swapped it out.

I remember when I plugged it in the light came on at that point despite me leaning pretty heavily on that passenger seat. I thought it was odd but didn't make much out of it because I cycled the key sat back down in the passenger seat and it seemed to behave appropriately( the light turned off) . So I moved on and forgot about it for a couple of days.

in the back of my mind I keep thinking this was the inciting event but it doesn't really make sense why unplugging this and replacing this light would trip something that can't be reset. I did put the old light back in and see if it was just a problem with the new light and of course that wasn't it.

May be unrelated but I wanted to add those last bits of information.

[thomasshawn]

I sent you a PM with a wiring diagram.
 
An "above level" fault code might indicate that the resistance of an airbag unit is high, so check the connections.  A bad contact will give you a higher resistance.  The control unit uses the resistance of each airbag or belt tensioner unit to check the system.  On a PIWIS you can read the resistance in Actual Values, so maybe check that out on Durametric.  They should be around 2.5 ohms.

Thank you very much I got it and replied I'll look it over when I have a bigger screen that I can zoom in on

[thomasshawn]

somehow this got deleted from original post.
this box is the one I'm. suspecting may be a source of my issues look at the hacked up connectors. this is under driver's seat

[Richard Hamilton]

That looks like the control box for the seat memory.

[thomasshawn]

I think it is. seat memory seems to be working however it doesn't move with lock and unlock and since I'm only driver I don't care much.

PO told me the plug frequently came disconnected so they "fixed" it. looks like they used heat shrink to press the pins of the box to the wires of the harness. surprisingly secure except for one pin.

I noticed under the passenger seat they did the same thing on the module under that seat. no plug just heat shrink over the connections. it appears they simply removed the plug and used the actual pins/connectors for that one however. those connections are actually very secure. but makes me wonder why and what the issue might really be.

[thomasshawn]

maybe unrelated. I'm looking for anything but previous owner said that plug was one that was causing the issue previously. so. that's why I focused on it.

[Richard Hamilton]

It is always a nightmare working with non-standard wiring, and it is highly unusual (this side of the pond anyway) for a Porsche dealer to do wiring changes like that.  I think you have the right idea to check all the connections and make sure everything is secure.  Heaven knows what you will find under all that insulation tape.....